Tooth-brush.



PATENTED APR. 1'7, 1906.

C. R. STEVENSON. TOOTH BRUSH.

APPLICATION FILED MAR.23,1905.

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Specification of Letters Patent.

Patented April v17, 1.906.l

Application led March 23, 1905. Serial No. 251,569.

To @ZZ whom it may concern:

Be it known that 1, CHARLES R. STEVEN- "soN, a citizen of theUnited States,residing at Boston, in the county of Suolk and State of Massachusetts, have invented new and useful Improvements in Tooth-Brushes, of

which the following is a specification.

The object of this invention is to provide a tooth-brush having a hollow handle inwhich can be placed a collapsible tube of dentifricepaste, the brush and handle being so contached to sai structed that by means of a slide particularly designed and constructed therefor said tube can be compressed and said paste forced out of said. tube in small quantities through a passage in the bristle-holder to the bristles. Thus at all times the holder or handle/will contain a su ply of paste, with means atdD handle whereby lsaid paste can be readily forced into the bristles as needed.

The invention consists in thecombination and arrangement of parts set forth in the following speciiication, and particularly pointed out in the claims thereof. Referring to the drawings, Figure' l is a sido elevation of my improved tooth-brush. Fig. 2 is a longitudinal section', partly in elevation, taken on line 2 2 of Fig. 1. Fig. 3 is a transverse section taken on line 3- 3 of Fig. 2. Fig. 4 is a transverse section taken on line 4 4,

` Fig. 1.

Like numerals refer to like parts through-` Y the Itube 12, as illustrated in Fig. 2, and when l out the several views of the drawings.

In the drawings, 5 is a holder with bristles 6 attached thereto. Said holder is exteriorly screw-threaded at 7 to engage the interiorlyscrew-threaded end of a hollow handle 8.

Awhich fits in a recess 154.

"Tlie'holder 5 is also provided with a chamber 9 at one end thereof, which is interiorly screw-threaded at 10.to engage the exterior screw-threads 11, formed upon one end of-a collapsible tube 12 in the usual manner, said tube being located in the interior of the hollow handle 8. A passage-way 14 leads from the open end of the tube 12 to about the central portion of the holder 5 and longitudinally thereof and opens outwardly at 14 to connect with the Vbristles 6. The passageway '14 is closed by means of a consisting of a U-sha ed pin or s prong 15l of said slide extends transversely partly across said holder and across the passage-way 14. The other prong 152 of said slide extends entirely across the holder 5 and, terminates in an enlarged portion or head 153, The portion of 1de 15. One

p lug or slide,

said slide 155 which connects the prongs 15 and 152 constitutes a finger-piece, and the holder 5 is recessed at 17 in orderthat the user may insert the nail of the thumb or iinger behind the finger-piece 155 and withdraw the slide sufficiently so that the prong 15 will pass out of the assage 14 and allow the paste-to-pass/throug 4the passages 14 and 14 through the bristles when the tube 12 is compressed, as hereinafter described.

lt will be understood that the prong 15 acts as a stop to prevent the dentifrice from passing through the passages 14 and 14l when in the position villustrated in Fig. 2, and when said slide is moved to the position illustrated in dotted lines in said figure the passages 14 and 14 are open forthe dentifrice to flow therethrough, while the head 153 passes to the bottom of the recess '154 and abutting against the bottom of said recess acts as a stolp to prevent the slide from being accidental y withdrawn .from the holder.

A compressor 18 is adapted to slide longitudinally of the handle 8 and is guided in a slot 19, formed in said handle. Said compressoris provided with a cylindrical top 20, by means of which it is moved lon itudinally of the yhandle 8. The portion of the compressor located inside the handle 8, as shown 1n Figs. 2 and 3, is formed to fit against the upper side of the interior of said handle and has a curved front face 21 which bearsagainst moved b the user toward thebrush end of the hand e forces the dentriice 13 out' of thel tube 12 and through the passages 14 and 14 to the bristles 6. has been forced into the bristles the user closes the passage 14 by pushing the pin 15 into the position shown in Fig. `2, the object of said 1n being to prevent water from entering t e assage-way and flowing into the tube 12 an also to prevent paste from flowing into the bristles or allowing the same to d0 so according as said slide may be located in the position shown in full or dotted lines, respectivel in Fig. 2. My improved brush is used in t e ordinary well-known manner.

As soon as suflicient paste The particular advantage derived from y roo IIC)

tube cannot be compressed accidentally when l f ing the passage-way through which dentrice used. in traveling, said handle forms a pro-i tector as well as a carrier for said tube.v My improvedb tooth-brush has means for` practically and efliciently compressing said tube gradually from one end to the other and forcing the paste contained therein into the bristles of the brush, and, further, my improved tooth-brush contains means for clospasscs from the tube to the bristles of the brush., which means are located entirely within the holder for the bristles when said means are in position to close the passageway and prevent the dentrice from flowing out among the bristles, or, in other, words, when the brush is in condition to be, used, thus preventing any dan er of the inside of the mouth being lacerate I by a projection or -projections upon the exterior ofI the brush vproper or the older for the bristles. The form of the holder and of the handle is immaterial, as it is evident that handles and lholders of different shapes and designs may be used Without departing from the;Y spirit of my invention. L

Still 'another advantage of my improved tooth-brush consists in the fact that the same is very economical, saving waste of the dentriiice, and also the dentrifice being forced into the bristles at the bottom thereof becomes moreuthoroughly mixed and disi tributed throughout the. entire area of the' brush than is the case where it is placed upon the outside of the bristles.

Having thus described. my invention, what I claim, and desire to secure by Letters Patent, is-

l. As an artlcle of manufacture, a tooth-v brush consisting of a holder with bristles fast thereto, a hollow handle detachably fastened to said holder, a collapsible tube of'paste located in said handle and having screwthreaded engagement with said holder, said holder provided with a passage therein leading from one end of said tube to said bristles,

-and a plug extending transversely Iacross said passage-way'and located entirelywithin said holder when` said passage-way 1s closed th,ereby. i"

2. As an article of manufacture, a tooth;

brush consisting of a holder with bristles fast thereto, a hollow handle detachablyi fastened v to said holder, a collapsible tube of paste located in said handle and having screwthreaded engagement with saidholder, said holder provided with a passage therein leading from one end of said tubeto said bristles, i'

and a slide extendin transversely across said passa e-way and s idable on said holder, said slide ocated entirely withinsaid holder when said passage-way is closed thereby, and

means to prevent said slide from becoming f detached from said holder.

3. As an article 'of manufacture, a toothbrush consisting of a holder with bristles fast thereto, a hollow handle detachably fastened to said holder, a collapsible tube of paste located in said handle and having screwthreaded engagement with said holder, said holder provided with a passage therein lead` ing from one end of said tube to said bristles,

and a slide extendin transversely across said:

passage-way'and sli able on said holder, said slide having a finger-piece thereon and located entirely within said holder when said passage -Way is closed fby said slide, and means to prevent said xslide from becoming detached from said holder. n

4. As an article of manufacture, a toothbrush consisting of a holder with bristles fast thereto, a hollow handle detachably fastened to said holder, a collapsible tube'of paste located in said handle and having screwthreaded engagement with said holder, said nesses. i l o i CHARLES R. STEVENSON. Witnesses:

CHARLEs S. GooDrNG,. ANNEe-J. BAILEY.-` 

